Mightee writes: "SEOUL, Oct 5 (Reuters) — Samsung Electronics said it will file patent-infringement claims in France and Italy to ban the sale of Apple's new iPhone less than a day after it was unveiled, intensifying a legal battle between the two top brands.

It will also file legal cases in other countries to stop the sale of the iPhone 4S after further review, the South Korean maker of Galaxy smartphones and tablets said in a statement.

Samsung has emerged as a credible challenger to Apple's mobile devices and the two companies are battling over patents in courtrooms around the world. They have sued each other in 10 countries involving more than 20 cases since April."